The campus of the Hungarian Academy of Sciences which houses Izotop Intezet, a Hungarian isotope maker

An aerial view shows the campus of the Hungarian Academy of Sciences which houses Izotop Intezet, a Hungarian isotope maker, in Budapest November 17, 2011. Hungary has said that the source of low levels of radioactive iodine detected in Europe over the past few weeks was probably the isotope maker in Budapest, the U.N. nuclear agency said on Thursday. Hungary's nuclear authority told the International Atomic Energy Agency that iodine-131 had been released from the Institute of Isotopes Ltd from September 8 to November 16. The IAEA said there was no health concern to the population.